Frame construction.



R, c. SOHOPIELD. FRAME CONSTRUCTION.

APPLICATION FILED AUG. 7, 1912.

Patented Jan. 6, 1914.

Aobeft G Saba/122 1 COLUMBIA PLANOCIRAPH co ASHINUTON c ROBERT C, SCI-IQFIELD, OF EREEP QBT, ILLINOIS.

FRAME CONSTRUCTION.

Specification of Letters Patent.

Patented Jan. 6, 1914.

Application filed August 7, 1912. Serial No. 713,743.

To all whom it may concern:

a citizen of the United States, residing at Freeport, in the county of Stephenson and State of Illinois, have invented certain new and useful Improvements in Frame Construction, of which the following is a SPECI- fication.

' My invention relates to improvements in frame constructions. for farming implements, such as a combined potato planter and digger and has particular reference to apparatus of this character embodying novel means whereby the main frame of the implement may be raised and lowered.

r-in important object of this inventlon is to provide means of the above mentioned character, which are simple in construction,

cheap to manufacture, strong, durable, and

convenient in use,

Other objects and advantages of this .invention will be apparent during the course of the following description.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same, Figure 1 is a plan view of a frame construction embodying my invention, Fig. 2 is a fragmentary side elevation of the same, one wheel being removed, and, Fig. 3 is a perspective view of the means for raising and lowering the main frame.

In the drawings, wherein is illustrated a preferred embodiment of my invention, the numeral 4 designates a main longitudinally extending frame, comprising longitudinal beams 5, suitably connected at their forward and rear ends, as shown.

The "numeral 6 designates a vertically swinging auxiliary frame, which serves to support the main longitudinal frame. The auxiliary frame 6 comprises rearwardly diverging auxiliary frame beams 7 the upper ends of which are pivotally connected with the longitudinal frame beams 5, as shown at 8. Connected with the auxiliary frame beams 'T are bearings 9, receiving therethrough an axle 10, upon which are rotatably mounted traction wheels 11, as shown.

Journaled through the rear portions of the auxiliary frame beams 7 is a transverse rock-shaft 12, upon which are rigidly mounted longitudinally curved lifting shoes 13, connected therewith by means of bolts j 14 or the like, which also pass through the Be it known that I, ROBERT C. Sonorrnm),

ends of diagonal bars '15, the opposite ends of which are connected with the lifting shoes 13 by. any suitable means. The lifting shoes 13 are provided with spaced longitudinally extending upstanding ribs 16, toserve to reinforce and stiffen the lifting shoes and to provide guide means for receiving the longitudinal frame beams 5 therebetween. The lifting shoes 18 are preferably rigid. One end of the rock-shaft 12 is bent upwardly forming a crank 17, for receiving thereon the lower end of a tubular operating lever 18, which is accordingly rigidly connected therewith.

The numeral 19 designates a holding or looking lever, having .oneend pivoted upon a bolt 20, as shown. The forward end of formed in the tubular operating lever 18 and .is provided with openings or notches 22, adapted to receive the end-wall of the slot 21, thus serving to detachably lock the lever 18 in the desired angular position.

In the operation of the apparatus, the holding lever 19 is elevated to release the operating lever 18, which may now be swung in either direction to raise or lower the main longitudinal frame. The swinging of the lever 18 turns the rock-shaft 12, which in turn swings the lifting shoes 13, which travel in slidable engagement with the longitudinal frame beams 5, to elevate the same, such beams fitting between the ribs 16,

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

Having thus described my invention, I claim 1. The combination with main frame beams, of inclined auxiliary frame beams pivotally connected therewith, an axle carried by the auxiliary frame beams, wheels mounted upon the axle, a rock-shaft journaled through the auxiliary frame beams and disposed rearwardly of the axle, longitudinally curved rigid shoes disposed between the axle and main frame beams and slidably engaging the lower surfaces of the the lever 19 extends through a slot 21 main frame beams and rigidly connected with the rock-shaft, and means to turn the rooleshaft.

2. The combination with longitudinal main frame beams, of auxiliary frame beams pivotally connected therewith, an axle carried by the auxiliary frame beams, wheels mounted upon the axle, a rock-shaft carried by the auxiliary frame beams and extending transversely thereof, longitudinally curved shoes disposed between the axle and the main frame beams and provided upon their upper surfaces with spaced longitudinal ribs which reinforce and stifien the shoes and engage upon opposite sides of the longitudinal. main frame beams to serve as guide means therefor, means rigidly connecting the longitudinally curved shoes with the rock-shaft, and means to turn the rockshaft.

3. The combination with longitudinal main frame beams, of auxiliary frame beams pivotally connected therewith, an axle carried by the auxiliary frame beams, wheels mounted upon the axle, shoes disposed between the axle and the main frame beams and provided upon their upper surfaces with spaced longitudinal ribs which reinforce and stiffen the shoes and engage upon opposite sides of the longitudinal main frame beams to serve as guide means therefor, and means to swing the shoes in a vertical plane, connected with the auxiliary frame beams.

4. The combination with a longitudinal main frame, of an inclined auxiliary frame pivotally connected with the main frame and having portions thereof extending downwardly therebelow, wheels connected with the pivoted auxiliary frame, a transverse rock-shaft connected with the auxiliary frame, shoes arranged between the auxiliary frame and the main frame and slidably engaging portions of the main frame and connected with the rockshaft to turn therewith, means to turn the rock-shaft, and means to hold the same in adjustment against turning movement.

In testimony whereof I affix my signature in presence of two witnesses.

ROBERT C. SCHOFIELD.

.Vi'tnesses Roscoe J CARNAHAN, EDUARD GILBERT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

